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Finding the Fourth Proportional to 15,944,139.20, 22,271,406.40 and 15,944,139.20

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Solution

The fourth proportional to 15,944,139.20, 22,271,406.40 and 15,944,139.20 is: 22,271,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,944,139.20 : 22,271,406.40 = 15,944,139.20 : x
  2. Step 2: Convert to fraction form
    15,944,139.20/22,271,406.40 = 15,944,139.20/x
  3. Step 3: Cross multiply
    15,944,139.20x = 22,271,406.40 × 15,944,139.20
  4. Step 4: Simplify right side
    15,944,139.20x = 355,098,403,821,370.81
  5. Step 5: Solve for x
    x = 355,098,403,821,370.81/15,944,139.20
  6. Step 6: Final answer
    x = 22,271,406.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.